Scaling and Area

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• 3

• 9

• There are 9 copies of ABCD within A'B'C'D. The original ABCD is the first one. There are 7 full congruent copies of ABCD. Figures P and Q together make an additional copy for total of 9.

Each image shows a quadrilateral in a plane. The quadrilateral has been dilated using a center above the plane and a scale factor between 0 and 1. Estimate the scale factor that was used for each dilation. Dilation A.

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Each image shows a quadrilateral in a plane. The quadrilateral has been dilated using a center above the plane and a scale factor between 0 and 1. Estimate the scale factor that was used for each dilation. Dilation B.

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Each image shows a quadrilateral in a plane. The quadrilateral has been dilated using a center above the plane and a scale factor between 0 and 1. Estimate the scale factor that was used for each dilation. Dilation C.

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Select the solid whose cross sections are dilations of some two-dimensional shape using a point directly above the shape as a center and scale factors ranging from 0 to 1.

• cone

• cube

• cylinder

• triangular prism

What is the total surface area of the triangular prism shown? 

• 468 in²

• 540 in²

• 576 in²

• 700 in²

Find the surface area of this figure.

• 148 cm²

• 120 cm²

• 50 cm²

• 54 cm²

A square pyramid is covered with decorative wrapping paper with no overlap.  The net of the box is shown on the right.  How many square centimeters of wrapping paper are needed to cover the surfaces of the box? 

• 108 cm²

• 324 cm²

• 180 cm²

• 432 cm²

When finding Surface Area which type of units could be on the end of your answer?

• mm

• cm²

• in³

• ft⁴

• minion⁸